THE WITCHER 3: WILD HUNT
78 Achievements
That Is the Evilest Thing…
Ignite the gas produced by a Dragon's Dream bomb using a burning opponent. Do this 10 times.
How to unlock the That Is the Evilest Thing… achievement in THE WITCHER 3: WILD HUNT - Definitive Guide
Once you have the formulae and the needed components, create it and equip it to your bomb slot and make sure to select it and make it active with LB. Next step is to equip Igni as your Sign. Now find some flammable enemies. Drowners or Bandits work great.
Now hit the enemies with Igni and hopefully they catch on fire. Then hit RB to throw a Dragon's Dream at then and BOOOOOM. Big explosion. Note that you don't need to get a kill from this combo, just that it goes off. You have 2 bombs at a time so repeat and then back off the battle and Meditate. If you have alcohol you'll get back your 2 bombs. Repeat until the achievement unlocks.
Here is a playlist of guides for this game!
https://www.youtube.com/playlist?list=PL-HeW6XkKdUKwnGbhUYjE...
First you must buy the formula for the Dragon's Dream Bomb from the Herbalist in the East of Novigrad (Herbalist’s Hut fast travel point, East of Oxenfurt). He also has the required ingredients in stock. Buy them and craft the bomb. Now look for a group of monsters or humans without armor. Use Igni on them to make them burn, then immediately throw the Dragon's Dream Bomb on the burning enemy. This will ignite the gas produced by the bomb and cause an explosion. You must repeat this 10 times for the trophy to unlock.
If you have strong alcohol in your inventory you can meditate to replenish your bombs. Fast travel to another map (e.g. Royal Palace of Vizima) to make enemies respawn, or do it against different enemies every now and then if you don't want to farm it in one spot (can also be combined nicely with destroying monster nests).
Visual video of the trophy.
We set fire to the fire and throw a bomb